Numerical analysis of Ag/Cu2O/TiO2/FTO based solar cell with Ch3Nh3PbI3 interfacial layer using SCAPS 1D

We have analyzed the effect of Ch3Nh3PbI3 interfacial layer on Cu2O/TiO2 based solar cells using SCAPS 1D. The initial investigation has shown that insertion of interfacial layer has resulted in better efficiency and lesser impact of defect variations. The Ag/Cu2O/Ch3Nh3PbI3/TiO2/FTO solar cells have shown enhanced efficiency in comparison to Ag/Cu2O/TiO2/FTO solar cell. Further, we have varied the thickness and defect density of Cu2O and it is observed that the impact of thickness variation is relatively less on the efficiencies of Ag/Cu2O/Ch3Nh3PbI3/TiO2/FTO solar cell. The optimized obtained thickness of Cu2O is 2 µm. The thickness and electron affinity of TiO2 is varied to understand its impact on the performance of solar cells. Later, we have varied the interfacial defects of the solar cells and have observed that the Ch3Nh3PbI3/TiO2 interface have affected the efficiencies drastically in comparison to Cu2O/Ch3Nh3PbI3 interface in Ag/Cu2O/Ch3Nh3PbI3/TiO2/FTO solar cells. We have also studied the effect of thickness variation of Ch3Nh3PbI3 layer and it has shown increased efficiency with increase in thickness which is eventually tending towards saturation. Finally, we have tried to understand the impact of temperature variation on the performance of the solar cells.